Omron CJ1W-CRM21 CJ Series CompoNet Master Unit

Only 8 item(s) left in stock

Manufacturer: Omron
Product No.: CJ1W-CRM21
Country of origin:Japan
Product Type: CompoNet Master Units
Payment: T/T, Western Union
Weight: 130g
Dimensions: 8.0 cm x 3.1 cm x 9.7 cm
Shipping port: Xiamen
Warranty: 12 months

Description

Designed for high-speed bus communication within the CJ-series PLC platform, the CJ1W-CRM21 establishes a robust interface between control systems and decentralized I/O devices over CompoNet networks. Operating as a dedicated CJ-series Special I/O Unit, this master module facilitates rapid data transfer with distributed sensors, actuators, and remote terminals to minimize processing overhead at the CPU level.

The module mounts directly onto the PLC backplane, drawing internal power directly from the system's power supply unit. For external field communication, it features an integrated communications power supply connector capable of supporting high current capacities, complete with built-in real-time power monitoring to flag voltage or connection anomalies immediately.

Features

Seamless integration as a Special I/O Unit on the CJ-series PLC backplane.
Built-in communications power supply ON/OFF monitoring directly at the interface connector.
Robust noise immunity designed to withstand transient industrial disturbances.
High-capacity power throughput for external communication networks.
Solid-state, shock-resistant architecture optimized for harsh production environments.

Applications

Distributed sensor and actuator networks in manufacturing environments.
Material handling and high-speed conveyor systems.
Packaging machinery and automated assembly lines.
General industrial machine control requiring fast remote I/O response times.

Technical Specifications

ManufacturerPart Number / ModelUnit ClassificationCurrent ConsumptionCommunications Power Connector CapacityCommunications Power MonitoringNoise ImmunityShock ResistanceAmbient Operating TemperatureDimensions (L x W x H)Weight

Omron

CJ1W-CRM21

CJ-series Special I/O Unit

400 mA max. at 5 VDC (supplied from Power Supply Unit)

5 A max. (allowable current capacity)

ON/OFF status detection at the communications power supply connector

Conforms to IEC 61000-4-4, 2 kV (applied to power supply)

196 m/s2 (3 times each in X, Y, and Z directions)

0 to 55 degC

8.0 cm x 3.1 cm x 9.7 cm

0.13 kg

Connections and Interfaces

Backplane ConnectorCommunications Power Connector

Interface Type	Function / Description
Direct connection to Omron CJ-series system bus
Interface for external network power with built-in voltage monitoring (5 A max.)

Installation Guidelines

Turn off the PLC system power supply before mounting or removing the module from the CJ-series backplane.
Verify that the external communications power supply connected to the interface does not exceed the 5 A maximum allowable current capacity.
Ensure proper grounding and shielding of the CompoNet network cables to maintain the specified IEC 61000-4-4 noise immunity standards.
Maintain adequate clearance around the unit to ensure natural ventilation and prevent operating temperatures from exceeding 55 degC.

Compliance and Certifications

IEC 61000-4-4 (Electromagnetic Compatibility - Electrical Fast Transient/Burst Immunity)

Key Features:

#CompoNet Master Units #Omron CJ Series

What is the primary function of the Omron CJ1W-CRM21?

The Omron CJ1W-CRM21 is a CompoNet Master Unit designed for CJ-series PLCs, acting as the primary interface to control and monitor distributed CompoNet slave devices, remote I/O, and sensors.

What is the power consumption of the CJ1W-CRM21 from the PLC backplane?

The module has a maximum internal current consumption of 400 mA at 5 VDC, supplied directly from the PLC Power Supply Unit.

Does this module support external communications power monitoring?

Yes, the CJ1W-CRM21 features communications power ON/OFF monitoring, which actively detects the status of the power supply directly at the communications power connector.

What is the maximum allowable current capacity for the communications power connector?

The communications power supply connector has a maximum allowable current capacity of 5 A.

Global Express Shipping

Standard Delivery: 4-6 Business Days via DHL, FedEx, and UPS.
Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
Worldwide Coverage: Serving over 150 countries, including rapid delivery to Saudi Arabia and UAE.

Returns & Warranty

30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
12-Month Warranty: Every industrial component is backed by our professional technical warranty.

Orders are processed and delivered Monday-Friday (excluding public holidays).

For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .

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Omron CJ1W-CRM21 CJ Series CompoNet Master Unit